Firearm



C. C. LOOMIS July 6, 1937.

FIREARM 2 Shets-Sheet l FJ' led April 28, 1934 INVENToR. CRAWFORDCLOOMIS ATTORNEY yJuly .6, 1937. Y Q Q LOOM|S 2,085,812

FIREARM Filed April 28, 1934 2 Sheets-Sheet 2 A r///////////////7//7/ IPatented July 6, 1937 Crawford C. Loomis, Elton, N. Y., assignor toRemixigton- Arms Company, Inc., a corporation of Delaware ApplicationApril 28, 1934, Serial No. 722,901 16 Claims (Cl. 4Z16)' The presentinvention contemplates a'rearm differing quite distinctly from priorpractice, in that the receiver and breech block are rigidly united. Toopen the arm, for ejecting of iired provided withan internal interruptedthread 22, and a corresponding interrupted thread 23 is formed on thebarrel. The action is opened by rotating the receiver to disengagethreads 22 and shells and for reloading, the entire receiver is 23 andsubsequently sliding the receiver rear- 5 moved rearwardly with respectto the barrel. wardly. A guide lug 2li on the barrel and in The receivercomprises a forwardly extending alignment with one section of. theinterrupted portion, preferably a tube, which encircles the thread 23 isengaged by the margin 25 of a barrel and is locked thereto, preferablyby rotary IeCeSS in JChe receiver t0 Stop its uIllOCking mOVelomovement, at a point in advance of the firing ment and to guide thereceiver during its rearchamber. Thus, a substantially solid breech Wardmovement. A loading and ejection port 26 mechanism is secured, whilepermitting opening is cut in the receiver in such a position that whenat the breech for reloading. the action is closed its rearward margin isslight- The invention likewise contemplates certain ly forward from thechamber mouth.

l5 improvements in re control mechanism appli- Within the slidingreceiver 2| and immediately l5 cable to firearms generally, as will morefully apin the rear of the ejection and loading P01717 25 pear in thespecification. is a xed breech block 21 containing an extractorTherearms illustratedis a small caliber single 28 and an ejector 29. Thedevices for securing shot rifle, but it is tobe understood that theoperthe breech block to the receiver may include the ating principlesand inventions are of general Shank 30 0f an Operating handle 3l. BOthWalls 20 applicability. of the receiver and the breech block are aper-In the drawings: tured to receive said shank 3l'. Moreover, the Fig. 1is a fragmentary, sectional side elevation shank 30 may be held in placeby the eleei'fOI Ieof a typical rearm embodying the inventions. tainingpin 32, Said Pin preferably passing Fig. 2 is a fragmentary, sectionalside elevation through aligned apertures in the Shank 30. breech 25showing the striker cocked. v block 21, and receiver 2l. Pin 32 isreceived in Fig. 3 is a fragmentary, sectional side elevation a recess32| (Fig. 5) in the eJ'eeOI 29, Which showing the action open. recess iselongated to afford the ejector the nec- Fig. 4 is a fragmentary planview of receiver essary limited longitudinal movement. The

30 and barrel, showing the action opened for rebreech bleek andOperating handle shank are like- 30 loading by moving the receiver uponand relative Wise both apertured to receive the firing Dnto the barrel.The flring mechanism comprises a hollow gen- Fig. 5 is a transversesection on the line 5-5 erally cylindrical striker 33. urged forward bya of Fig. 1. striker spring and having secured thereto a 35 Fig. 6 is afragmentary, transverse section subring Din 34 The fOrWald end 0f theStriker 33 35 stantially on the line 6-6 of Fig. 1. is preferably ofreduced diameter, as shown at 36, The firearm illustrated comprises astock l0 and is encircled by a firing Din retracting spring suitablyrecessed to containfa trigger II pivoted 3l partially hDllSed in eIeCeSS 33 in the rear end at I2 and urged to counter-clockwise rotationof the breech block. The striker spring 35 Prefabout its pivot by aspring I3. Preferably metal erably encircles a cocking bolt 39 whichextends 40 plates I 4 are placed at each side of the trigger, forwardlyinto the hollow striker 33 and is roto prevent undue friction betweenthe trigger tatably secured thereto'by suitable means. Such and the woodof the stock. The usual trigger means may comprise an annular recess 40in the guard I5 is secured to the underside of the stock. cocking boltand a pin 4I fixed in the striker and 'I'he barrel I5 Yrests in asuitable groove in the extending into said recess. The rear end of the45 front portion of the stock and is secured to the cocking boltprojects from the receiver 2| and stock by such means as a bolt I1,which bolt carries a suitable nger piece 42. The rear end preferablypasses through metal bushings I8 and of the receiver is closed by athreaded plug 43 I9 in the stock and is received in an apertured Whichmay comprise e knlllled heed 44. Said and threaded lug 20 xed tothelgarrel. 'I'he replug comprises a forwardly facing recess adapted 50ceiver, identified generally by the numeral 2|, to receive the rearwardend of striker spring 35 is of tubular form and comprises a frontportion and a suitable abutment for said spring. The which extends asubstantial distance over the drawings illustrate a floating abutment,idenrear end of the barrel, as clearly illustrated in tied by numeral45, and comprising a sleeve 46 Fig. 1. Near its forward end the receiveris which extends through the plug 43 and ter- 55 minates adjacent theforward face of the cocking bolt finger piece 42. The plug 43 may besecured against rotation in the receiver by suitable means suchl as aset screw 41 extending through the receiver wall and entering one of twoslots 48 in said plug. The floating abutment 45 comprises an outwardlyextending lug 49 which is likewise received in a slot 48 in the plug orxed abutment 43. Forward movement of the floating abutment with respectto the plug may be limited by partially closing the open end of saidslot. The sleeve d8 comprises a bayonet slot 50 which receives a pin 5Iprojecting laterally from the cooking bolt 39. When the cooking bolt isretracted and rotated slightly to place the pin 5i in the transverselyextending and recessed portion 52 of slot 5B the striker cannot moveforward and the gun is thus rendered lsafe.

To fire the gun, the cooking bolt must be retracted slightlyand rotatedto bring pin 5i into alignment with slot 50. The striker is then held,in the manner to be hereinafter described, in the position shown in Fig.2. When the trigger is pulled, the striker advances under the pressureof striker spring 35 and in so doing compresses the firing pinretracting spring 3T. Before the striker has advanced sufficiently tocause the firing pin 34 to contact a cartridge in the chamber, theforward face of finger piece 52 engages the rear end of abutment sleeved5 and moves the floating abutment forward. This movement of thefloating abutment prevents further extension of the striker spring,enabling the compressed retractor spring to return striker and firingpin until the floating abutment again engages the fired plug 43.

Pivoted in the lower part of the tubular receiver and projectingdownwardly therefrom is a sear 55. In the construction shown in thedrawings this sear is supported on a pivot 56 in a pair of flanges 51projecting a short distance below the receiver. The shoulder 58 of thesear is adapted to engage a notch 59 in the striker to hold the strikerin cocked position, and enters a cut-out 60 when the striker is in itsforward position. The cut-out S terminates in a forwardly facingshoulder 60j adapted to engage the sear shoulder 58 and prevent suchforward movement of the firing pin as might result in the accidentalfiring of a cartridge in the chamber. Fig. 1 shows the striker thrustforward to engage shoulders 58 and 6M, the floating abutment d5 beingheld away from plug d3. The sear is urged to striker engaging positionby suitable means such as a spring 5I partially housed within the searand bearing against a part of the receiver. The sear is controlled bythe trigger il, said trigger being provided with a projection 52 forengagement with the sear. The trigger I l is also provided with a stoppin 63 adapted to engage the underside of the receiver and limit themovement of the trigger by its spring I3 when the receiver is retracted.Said stop pin 63 may be associated with an upward projection 64 which byits engagement with the lower and rear end of ejector 29 serves toactuate said ejector. Projection 64 likewise engages a shoulder 65 ofthe receiver adjacent the ejector 29 and thus serves as an abutment tolimit the rearward movement of the receiver.

The operation of the mechanism will be apparent from the foregoingdescription. It will be seen that the functions of breech locking, firecontrol, breech unlocking, opening extraction and aosaeis ejection, areall performed by mechanism heldin a receiver which moves upon andrelative to the barrel, and that the breech block as a member separatefrom and movable in the receiver has been eliminated.

What is claimed is:

1. A rearm comprising a stock, a barrel secured to said stock, areceiver slidably and rotatably mounted on said barrel, a breech blockfixed in said receiver, an ejector held in said breech block. and anejector actuator mounted in said stock, said ejector being moved by therotation of said receiver into position for engagement by said actuator.

2. In combination with a receiver, a breech block in said receiver andan ejector in said breech block; assembly means comprising an operatinghandle passing through aligned apertures in said breech block andreceiver, and an ejector retaining pin passing through aligned aperturesin said operating handle, said breech block and said receiver.

3. In combination with a receiven' a breech block, an ejector and afiring pin; assembly means comprising an operating handle apertured toreceive said firing pin and passing through aligned apertures in saidbreech block and receiver, and an ejector retaining pin passing throughaligned apertures in said operating handle, said breech block and saidreceiver.

4. A firearm comprising a barrel, a receiver, means for locking saidreceiver to said barrel, a breech block in said receiver, and anoperating handle extending through and joining said breech block andreceiver.

5. A firearm comprising a barrel, a receiver, a breech block in saidreceiver, an operating handle extending through and joining said breechblock and receiver, and an interrupted thread connection between saidbreech block and said receiver, whereby a movement oi said operatinghandle rotates said receiver, disengaging said interrupted threadconnection and enabling retraction of' said receiver to open the breech.6. A rearm comprising a barrel, a receiver rotatably and slidablymounted on said barrel, a breech block in said receiver, and anoperating handle on said receiver, said handle passing through andfixing said breech block to said receiver.

7. A rearm comprising a barrel, a receiver, a breech block in saidreceiver, an operating handle passing through and xing said breech blockto said receiver, an ejector in said breech block, and an ejectorretaining pin passing through and securing together said operatinghandle and said breech block.

8. A rearm comprising a stock, a barrel secured to said stock, a tubularreceiver supported on said barrel and slidable rearwardly thereon frombreech closing position to breech open position, a breech block fixed insaid receiver, a striker in said receiver comprising a ring pinextending through said breech block. a shell ejector in said breechblock, fire control mechanism comprising a striker-engaging scarsupported in said receiver and a sear actuating trigger supported insaid stock, a shoulder on said receiver, and a. member moved by saidtrigger into the path of movement of said shoulder and said ejector tolimit the rearward movement of said receiver and actuate said ejector.

9. A firearm comprising a barrel, a breech mechanism comprising atubular member, a

breech closing block secured to said member, a striker in said tubularmember having a ring pin, a striker propelling spring, a retractingspring, and an abutment for said striker spring mounted for limitedmovement in said tubular member and adapted to move forward during aportion of the forward movement of said striker rom said bolt, and afinger piece secured to said bolt.

11. A breech mechanism comprising a tubular member, a hollow striker, astriker retracting bolt extending into said striker, a striker springsurrounding said bolt, a floating abutment for said striker spring, axed abutment secured to said tubular member, and means for guiding themovement of the floating abutment on the fixed abutment.

12. A firearm breech mechanism comprising a tubular member, a hollowstriker mounted in said tubular member and provided with a ring pin, astriker operating bolt extending within the hollow of said striker androtatably joined thereto, a striker spring surrounding said bolt andpartially housed within the hollow of said striker, a floating abutmentfor said striker spring movably held in said tubular member, and amanipulative head on said bolt adapted to engage said abutment when saidbolt is moved forward by said springwhereby said abutment, striker andbolt move a short distancetogether.

13. A manually operated shoulder rearm comprising a stock, a barrelsecured to said stock, a tubular receiver comprising a` portionencircling the breech end of said barrel and interposed between saidbarrel and said stock, and a breech block xed in said receiver, saidreceiver being shiftable from a breech closing to a breech open positionand being wholly supported on said barrel in either of said positions.

14. A manually operated shoulder rearm comprising a stock, a barrelsecured to said stock, a tubular receiver rotatably and slidably mountedupon said barrel and wholly supported by said barrel, said receivercomprising a portion encircling the breech end of said barrel andinterposed between said barrel and said stock, a breech closing blockxed to said receiver, and an operating handle projecting from saidreceiver.

15. A manually operated shoulder firearm comprising a stock, a barrelsecured to said mounted upon said barrel and wholly supported by saidbarrel, said receiver comprising a portion encircling the breech end ofsaid barrel and interposed between said barrel and said stock, a breechclosing block xed to said receiver, an operating handle projecting fromsaid receiver, a trigger mounted in said stock, and re control mechanismmounted in said receiver and movable into operative engagement with saidtrigger as said receiver is moved to breech closing position.

16. A manually operated shoulder firearm comprising a stock, a barrelsecured to said stock, a tubular receiver rotatably and slidably mountedupon said barrel and wholly supported by said barrel, said receivercomprising a portion encircling the breech end of said barrel andinterposed between said barrel and said stock, a breech closing blockfixed to said receiver, an operating handle projecting from saidreceiver. a trigger mounted in said stock, means associated with saidtrigger for limiting the breech opening movement of said receiver, andre control mechanism mounted in said receiver and moved into operativerelation to said trigger by the breech closing movement of saidreceiver.

CRAWFORD C. LOOMIS.

15 stock, a tubular..receivernrotatably and slidably/Y Y

